<!DOCTYPE html>
<html lang="cn">
  <head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no, viewport-fit=cover">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  </head>
  <body>
    <div id="app">
      <h1>差值表达式</h1>
      <h3>{{ msg }}</h3>
      <h3>{{ count }}</h3>
      <h1> v-text </h1>
      <h3 v-text="msg"></h3>
      <h1> v-model </h1>
      <input type="text" v-model="msg">
      <input type="text" v-model="count">
    </div>
    <script src="./js/dep.js"></script>
    <script src="./js/watcher.js"></script>
    <script src="./js/observer.js"></script>
    <script src="./js/complier.js"></script>
    <script src="./js/vue.js"></script>
    <script>
      let vm = new Vue({ 
        el: '#app',
        data: {
          msg: 'Hello Vue',
          count: 100
        }
      })
    </script>
  </body>
</html>